Schedule I - Condensed Financial information of Parent (Coupang, Inc.) - Condensed Statements of Operations and Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Condensed Income Statements, Captions [Line Items]
Management service fee revenues	$ 30,268	$ 24,383	$ 20,583
Operating cost and expenses	(29,832)	(23,910)	(20,695)
Interest expense	(140)	(48)	(27)
Other expense, net	(39)	(19)	(7)
Income (loss) before income taxes	473	584	(93)
Income tax expense (benefit)	407	(776)	(1)
Net income (loss) attributable to Coupang stockholders	154	1,360	(92)
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax	(353)	(2)	9
Actuarial (loss) gain on defined severance benefits, net of tax	(34)	(18)	41
Total other comprehensive (loss) income	(386)	(20)	50
Comprehensive (loss) income	(233)	1,340	(42)
Parent company
Condensed Income Statements, Captions [Line Items]
Management service fee revenues	20	18	17
Operating cost and expenses	(558)	(400)	(324)
Interest expense	(2)	(2)	(2)
Other expense, net	63	84	28
Loss before equity in earnings of subsidiaries	(477)	(300)	(281)
Equity in earnings of subsidiaries	722	1,783	189
Income (loss) before income taxes	245	1,483	(92)
Income tax expense (benefit)	91	123	0
Net income (loss) attributable to Coupang stockholders	154	1,360	(92)
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of tax	(353)	(2)	9
Actuarial (loss) gain on defined severance benefits, net of tax	(34)	(18)	41
Total other comprehensive (loss) income	(387)	(20)	50
Comprehensive (loss) income	$ (233)	$ 1,340	$ (42)